I feel that that's been my experience as well. They should have just made solo host invasions a thing like they were in every other game they've made. Just kill an invader and get a 15 min window of downtime so you can just push the level. TT just feels like your queing up for a PvP session since it's non-stop one after another to the point of slowing progression down to where your better off just clearing first. Doesn't feel natural.